What is v3 authentication?
/v3/auth/tokens. Password authentication with scoped authorization. detail. Authenticates an identity and generates a token. Uses the password authentication method and scopes authorization to a project, domain, or the system.
What is a v3 onion address?
V3 onion addresses have 56 characters instead of 16 (because they contain a full ed25519 public key, not just the hash of a public key), meaning that migrating from V2 to V3 requires all users to learn/remember/save a new onion address address.
What is v3 onion service?
Onion v3 is the new next-generation Tor Onion Services specification. The most noticable change is the increase in address length, however Onion v3 uses better cryptography, ECC (eliptic curve cryptography) rather than RSA, and has an improved hidden service directory protocol.